Direct-type backlight module and display

ABSTRACT

A direct-type backlight module and a display. The direct-type backlight module comprises: a back plate, an optical assembly, a middle frame arranged on a front face of the back plate and located at the periphery of the optical assembly, and a cooling fin and a Mini LED lamp panel both located between the back plate and the optical assembly, wherein the cooling fin is connected to the back plate, the Mini LED lamp panel is connected to the cooling fin, and the optical assembly is connected to the middle frame and makes contact with the Mini LED lamp panel. The Mini LED lamp panel is used to make contact with the optical assembly, an OD value is zero, and light emitted by the Mini LED lamp panel may evenly irradiate on the optical assembly, so the thickness of the direct-type backlight module is greatly reduced.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No.201822219048.8, filed on Dec. 27, 2018, the content of all of which isincorporated herein by reference.

FIELD OF THE INVENTION

The present disclosure relates to the technical field of backlightmodule, and, more particularly, to a direct-type backlight module and adisplay.

BACKGROUND

An LED TV is getting thinner and thinner, especially for a direct-typeTV. However, it is a big challenge in both a structure and an optic tomake a direct-type TV ultra-thin. In the prior art, as shown in FIG. 1,a light source 4 is arranged on a back plate 1, and a liquid crystaldisplay (LCD) screen 5 is arranged on a front face of an opticalassembly 3. In the prior art, the direct-type TV in a whole could onlyget thinned on a periphery (a middle frame 2), while an area in alarge-scale as a whole is still pretty thick, due to there is a certaingap required in an optical design from the light source 4 to a lowersurface of the optical assembly 3, which is called an OD value (i.e.,d). A function of the gap is allowing a light from the light source 4 tobe evenly refracted or reflected to the optical assembly 3, thus it isdifficult to achieve a design of ultra-thin in a large-scale for theabove reason.

Therefore, the current technology needs to be improved and developed.

BRIEF SUMMARY OF THE DISCLOSURE

According to the above described defects, the purpose of the presentdisclosure is providing a direct-type backlight module and a display, inorder to solve a problem that a direct-type backlight module in theprior art is difficult to achieve ultrathin in a large scale due to theOD value.

A technical solution of the present disclosure to solve the technicalproblems is as follows:

A direct-type backlight module, comprising a back plate, an opticalassembly, and a middle frame arranged on a front face of the back plateand located at a periphery of the optical assembly, wherein furthercomprising: a cooling fin and a Mini LED lamp panel arranged between theback plate and the optical assembly; the cooling fin connects to theback plate, the Mini LED lamp panel connects to the cooling fin, and theoptical assembly connects to the middle frame while contacting with theMini LED lamp panel.

The direct-type backlight module, wherein the Mini LED lamp panelcomprising: a mounting board and a plurality of Mini LED lamps; the MiniLED lamps are arranged on a side of the mounting board opposite to theoptical assembly.

The direct-type backlight module, wherein a side of the mounting boardopposite to the cooling fin has a plurality of sockets arranged, thecooling fin has a socket hole arranged for the sockets to pass through.

The direct-type backlight module, wherein the mounting board and thecooling fin are connected by a thermal conductive glue.

The direct-type backlight module, wherein a top surface of the opticalassembly has a plurality of suspension loops arranged, and the middleframe has a plurality of hooks adapting to the suspension loopsarranged.

The direct-type backlight module, wherein the optical assembly comprisesa diffuser plate and an optical film; the diffuser plate has aface-to-face contact with the Mini LED lamp panel, and the optical filmconnects to the suspension loops.

The direct-type backlight module, wherein a bottom of a back surface ofthe back plate has a reinforcement beam arranged, and the reinforcementbeam comprises: two cross beams and a plurality of longitudinal beamsconnecting to the two cross beams.

A display, wherein comprising a direct-type backlight module and an LCDscreen, the direct-type backlight module comprises a back plate, anoptical assembly, and a middle frame arranged on a front face of theback plate and located at a periphery of the optical assembly, whereinfurther comprising: a cooling fin and a Mini LED lamp panel arrangedbetween the back plate and the optical assembly; the cooling finconnects to the back plate, the Mini LED lamp panel connects to thecooling fin, and the optical assembly connects to the middle frame whilecontacting the Mini LED lamp panel.

The display, wherein the Mini LED lamp panel comprising: a mountingboard and a plurality of Mini LED lamps, the Mini LED lamps are arrangedin a matrix on a side of the mounting board opposite to the opticalassembly.

The display, wherein the mounting board and the cooling fin areconnected by a thermal conductive glue.

The display, wherein a side of the mounting board opposite to thecooling fin has a plurality of sockets arranged, the cooling fin has asocket hole for the sockets to pass through.

The display, wherein a top surface of the optical assembly has aplurality of suspension loops arranged, and the middle frame has aplurality of hooks adapting to the suspension loops arranged.

The display, wherein the optical assembly comprises a diffuser plate andan optical film; the diffuser plate has a face-to-face contact with theMini LED lamp panel, and the optical film connects to the suspensionloops.

The display, wherein a back of the back plate has a plurality of coremodules and a back shell arranged, the core modules locate in the backshell; the back plate has a plurality of pillars arranged, the pillarsseparate the core modules from the back plate.

The display, wherein a bottom of a back surface of the back plate has areinforcement beam arranged, and the reinforcement beam comprises: twocross beams and a plurality of longitudinal beams connecting to the twocross beams.

The display, wherein the core modules connect electronically to the MiniLED lamps through the sockets; the back plate has a wiring holearranged, and a plurality of wires connecting to the core modules maypass through the wiring hole and the socket hole in turn beforeconnecting to the sockets.

The display, wherein the middle frame has an LCD screen arranged, andthe LCD screen locates on a side of the optical assembly away from theback plate.

The display, wherein the middle frame comprises: an upper middle frame,a lower middle frame, a left middle frame, a right middle frame, a rearpressing plate and a front pressing plate.

The display, wherein a top edge, a left edge, and a right edge of theLCD screen are connected to the upper middle frame, the left middleframe, and the right middle frame respectively.

The display, wherein a bottom edge of the LCD screen is fixed betweenthe rear pressing plate and the front pressing plate.

Benefits: due to adopting the Mini LED lamp panel, the Mini LED lamppanel may contact with the optical assembly, having an OD value of zero,the light emitted by the Mini LED lamp panel may irradiate evenly on theoptical assembly, making a thickness of the direct-type backlight moduleget greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a cross-sectional diagram of the direct-typebacklight module in the prior art;

FIG. 2 illustrates an exploded diagram of the direct-type backlightmodule in the present disclosure;

FIG. 3 illustrates a first cross-sectional diagram of the direct-typebacklight module in the present disclosure;

FIG. 4 illustrates a second cross-sectional diagram of the direct-typebacklight module in the present disclosure;

FIG. 5 illustrates a structural diagram on a front face of thedirect-type backlight module in the present disclosure;

FIG. 6 illustrates an enlarged view of an area A in the FIG. 5;

FIG. 7 illustrates an enlarged view of an area B in the FIG. 5;

FIG. 8 illustrates an enlarged view of an area C in the FIG. 5;

FIG. 9 illustrates a structural diagram on a back surface of thedirect-type backlight module in the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

The present disclosure provides a direct-type backlight module and adisplay, in order to make the purpose, technical solution and theadvantages of the present disclosure clearer and more explicit, furtherdetailed descriptions of the present disclosure are stated here,referencing to the attached drawings and some embodiments of the presentdisclosure. It should be understood that the detailed embodiments of thedisclosure described here are used to explain the present disclosureonly, instead of limiting the present disclosure.

Referencing from FIG. 2 to FIG. 9 at a same time, the present disclosureprovides a plurality of embodiments on the direct-type backlight module.

Shown as FIG. 2 and FIG. 3, the direct-type backlight module comprises:a back plate 10, an optical assembly 30, a middle frame 20 arranged on afront face of the back plate 10 and located at a periphery of theoptical assembly 30, as well as a cooling fin 60 and a Mini LED lamppanel 40 arranged between the back plate 10 and the optical assembly 30;the cooling fin 60 connects to the back plate 10, the Mini LED lamppanel 40 connects to the cooling fin 60, and the optical assembly 30connects to the middle frame 20 while contacting with the Mini LED lamppanel 40 face-to-face.

It shall be noted that, an OD value of a direct-type LCD TV in the priorart is generally greater than 8 mm, while a larger OD value means agreater thickness of a TV, thus an ordinary direct-type LCD TV isrelatively thick. The present disclosure adopts a Mini LED lamp panel40, the Mini LED lamp panel 40 may contact with the optical assembly 30(specifically, a face-to-face contact is adopted), needs no gap arranged(that is, the OD value is zero), a light emitted from the Mini LED lamppanel 40 may irradiate the optical assembly 30 evenly, thus making athickness of the direct-type backlight module get greatly reduced. At asame time, comparing to a groove-type back plate in the prior art (asshown in FIG. 1), the present disclosure adopts a flat plate as the backplate, which is thinner, thus also reduces a thickness of thedirect-type backlight module. According to a definition in the presentprofession, a Mini LED is an LED slightly larger than a micro LED,wherein a chip size of the micro LED is less than 80 μm, while a chipsize of the Mini LED is 80-300 μm. The Mini LED has a plurality ofcharacteristics including a high brightness, a long service life, a lowcost and a high contrast.

Further, heat generated by the Mini LED lamp panel 40 is transferred tothe back plate 10 through the cooling fin 60, which can sufficientlydissipate heat to prevent the Mini LED lamp panel 40 and the opticalassembly 30 from overheating. The cooling fin 60 may be made of athermal conductive material including aluminum, copper or etc. A size ofthe cooling fin 60 is as same as a size of the Mini LED lamp panel 40,which is convenient for a fully contact with the Mini LED lamp panel 40and a dissipation of the heat in the Mini LED lamp panel 40.

In an embodiment of the present disclosure, referencing to FIG. 2, FIG.5 and FIG. 8 at a same time, the Mini LED lamp panel 40 comprises: amounting board 41 and a plurality of Mini LED lamps 42, the Mini LEDlamps 42 are arranged in a matrix on a side of the mounting board 41opposite to the optical assembly 30. A side of the mounting board 41opposite to the cooling fin 60 has a plurality of sockets 43 arranged,the cooling fin 60 has a socket hole 61 arranged for the sockets 43 topass through.

Specifically, the Mini LED lamps 42 are embedded in the mounting board41. The Mini LED lamps 42 are usually only 80-300 μm, which almost fillup the mounting board 41, while each of the Mini LED lamps 42 is able toemit light independently, and emit light evenly on the optical assembly30.

An amount of the Mini LED lamps 42 on the mounting board 41 isrelatively large, thus all of the Mini LED lamps 42 are divided into aplurality of lamp areas, each lamp area has a same size and is arrangedin a matrix, and each lamp area has a socket 43, the socket 43 isapplied to connecting a plurality of wires, while the socket 43 iselectronically connected with the Mini LED lamps 42 in a correspondinglamp area. The cooling fin 60 connects to the back plate 10 by adouble-sided adhesive tape. Specifically, the Mini LED lamps on themounting board may be divided into 14 rows and 8 columns of array lamparea (shown as FIG. 2).

The cooling fin 60 may be designed integrally or composed of a pluralityof cooling components. In an embodiment, when the lamp areas are dividedinto 14 rows and 8 columns, it may arrange 8 cooling components, andeach cooling component corresponds to a row of the lamp areas, thus eachcooling component has 14 socket holes 61 arranged (shown as FIG. 5).

An embodiment of the present disclosure, shown as FIG. 3, wherein themounting board 41 and the cooling fin 60 are connected by a thermalconductive glue 62. Specifically, adopting thermal conductive glue 62 isbeneficial to transfer the heat generated by the light board out throughthe cooling fin 60.

A preferred embodiment of the present disclosure, referencing to FIG.3-FIG. 7 at a same time, wherein a top surface of the optical assembly30 has a plurality of suspension loops 33 arranged, and the middle frame20 has a plurality of hooks 211 adapting to the suspension loops 33arranged. The optical assembly 30 comprises a diffuser plate 32 and anoptical film 31; the diffuser plate 32 has a face-to-face contact withthe Mini LED lamp panel 40, and the optical film 31 connects to thesuspension loops 33.

Specifically, the middle frame 20 comprises: an upper middle frame 21, alower middle frame 22, a left middle frame, a right middle frame, a rearpressing plate 23 and a front pressing plate 24. A top surface of theoptical film 31 is hung on a hook 211 of the upper middle frame 21through the suspension loops 33, and a bottom edge of the optical film31 is fixed between the lower middle frame and the rear pressing plate23 through the rear pressing plate 23, to ensure the optical film 31sticks closely to the Mini LED lamp panel 40.

The middle frame 20 has an LCD screen arranged on, the LCD screenlocates on a side of the optical assembly 30 away from the back plate10. Specifically, a top edge, a left edge, and a right edge of the LCDscreen are connected to the upper middle frame 21, the left middleframe, and the right middle frame through a double-sided adhesive taperespectively. And by a front pressing plate 24, a bottom edge of the LCDscreen is fixed between the rear pressing plate 23 and the frontpressing plate 24, to ensure the LCD screen fixed.

An embodiment of the present disclosure, referencing FIG. 2, FIG. 4 andFIG. 9 at a same time, wherein a back of the back plate 10 has aplurality of core modules 70, a back shell 80 and a reinforcement beam90 arranged, the core modules 70 and the reinforcement beam 90 locate inthe back shell 80. Specifically, the core modules 70, the back shell 80and the reinforcement beam 90 are locating at a back bottom of the backplate 10 (close to a ground), thus a back top of the back plate 10(close to a sky) has an ultra-thin design. The core modules 70 connectto the Mini LED lamps 42 electronically through the sockets 43, the backplate 10 has a wiring hole 11 arranged, and a plurality of wiresconnecting to the core modules 70 may pass through the wiring hole 11and the socket hole 61 before connecting to the sockets 43, thereby aconduction between the core modules 70 and the Mini LED lamps 42 isrealized.

More specifically, there may be a plurality of the core modules 70, inan embodiment, when there are 8 cooling components arranged, the coremodules 70 may be arranged as four, each core modules 70 iscorresponding to two cooling components, and connects electronically tothe Mini LED lamp 42 corresponding to the two cooling components. Theback plate 10 has a plurality of pillars 12 arranged, each of thepillars 12 has an internal thread arranged, four corners of each of thecore modules 70 have a plurality of screw through holes arranged, aplurality of screws may pass through the screw through holes and fix thecore modules 70 to the pillars 12. The pillars 12 separate the coremodules 70 from the back plate 10, to prevent heat on the back plate 10from being transferred to the core modules 70 and causing the coremodules 70 malfunction due to getting overheat.

The reinforcement beam 90 is applied to strengthening strength of theback plate 10 and preventing the back plate 10 from being deformed. Thereinforcement beam 90 comprises two cross beams 91 located on both sidesof the core modules 70 and a plurality of longitudinal beams 92connecting the two cross beams 91. The longitudinal beams 92 are locatedbetween the core modules 70 and the back plate 10, since there is a gapbetween the core modules 70 and the back plate 10 due to the pillars 12,the longitudinal beams 92 may pass through the gap. Both the cross beams91 and the longitudinal beams 92 are in contact with the back plate 10,which may achieve a better strengthening effect. Two cross beams 91 andthe plurality of longitudinal beams 92 form a staircase shape. A bottomof the back shell 80 has a plurality of heat dissipation holes arrangedfor heat dissipation.

The present disclosure further provides a display, comprising thedirect-type backlight module described in any one of the embodimentsstated above, which is specifically as described above.

The present disclosure provides a display, since having arranged thedirect-type backlight module described in any one of the technicalsolutions stated above, thus having all the benefits stated above, andno more details are stated herein.

All above, the present disclosure provides a direct-type backlightmodule and a display, the direct-type backlight module comprising: aback plate, an optical assembly, and a middle frame arranged on a frontface of the back plate and located at a periphery of the opticalassembly, wherein further comprising: a cooling fin and a Mini LED lamppanel arranged between the back plate and the optical assembly; thecooling fin connects to the back plate, the Mini LED lamp panel connectsto the cooling fin, and the optical assembly connects to the middleframe while contacting with the Mini LED lamp panel. Due to adopting theMini LED lamp panel, the Mini LED lamp panel may contact with theoptical assembly, having an OD value of zero, the light emitted by theMini LED lamp panel may irradiate evenly on the optical assembly, makinga thickness of the direct-type backlight module get greatly reduced.

It should be understood that, the application of the present disclosureis not limited to the above examples listed. Ordinary technicalpersonnel in this field can improve or change the applications accordingto the above descriptions, all of these improvements and transformsshould belong to the scope of protection in the appended claims of thepresent disclosure.

What is claimed is:
 1. A direct-type backlight module, comprising a backplate, an optical assembly, and a middle frame arranged on a front faceof the back plate and located at a periphery of the optical assembly,wherein further comprising: a cooling fin and a Mini LED lamp panelarranged between the back plate and the optical assembly; the coolingfin connects to the back plate, the Mini LED lamp panel connects to thecooling fin, and the optical assembly connects to the middle frame whilecontacting with the Mini LED lamp panel.
 2. The direct-type backlightmodule according to claim 1, wherein the Mini LED lamp panel comprising:a mounting board and a plurality of Mini LED lamps; the Mini LED lampsare arranged in a matrix on a side of the mounting board opposite to theoptical assembly.
 3. The direct-type backlight module according to claim2, wherein a side of the mounting board opposite to the cooling fin hasa plurality of sockets arranged, the cooling fin has a socket holearranged for the sockets to pass through.
 4. The direct-type backlightmodule according to claim 2, wherein the mounting board and the coolingfin are connected by a thermal conductive glue.
 5. The direct-typebacklight module according to claim 1, wherein a top surface of theoptical assembly has a plurality of suspension loops arranged, and themiddle frame has a plurality of hooks adapting to the suspension loopsarranged.
 6. The direct-type backlight module according to claim 5,wherein the optical assembly comprises a diffuser plate and an opticalfilm; the diffuser plate has a face-to-face contact with the Mini LEDlamp panel, and the optical film connects to the suspension loops. 7.The direct-type backlight module according to claim 1, wherein a bottomof a back surface of the back plate has a reinforcement beam arranged,and the reinforcement beam comprises: two cross beams and a plurality oflongitudinal beams connecting to the two cross beams.
 8. A display,wherein comprising a direct-type backlight module and an LCD screen, thedirect-type backlight module comprises a back plate, an opticalassembly, and a middle frame arranged on a front face of the back plateand located at a periphery of the optical assembly, wherein furthercomprising: a cooling fin and a Mini LED lamp panel arranged between theback plate and the optical assembly; the cooling fin connects to theback plate, the Mini LED lamp panel connects to the cooling fin, and theoptical assembly connects to the middle frame as well as contacting theMini LED lamp panel.
 9. The display according to claim 8, wherein theMini LED lamp panel comprising: a mounting board and a plurality of MiniLED lamps; the Mini LED lamps are arranged in a matrix on a side of themounting board opposite to the optical assembly.
 10. The displayaccording to claim 9, wherein the mounting board and the cooling fin areconnected by a thermal conductive glue.
 11. The display according toclaim 9, wherein a side of the mounting board opposite to the coolingfin has a plurality of sockets arranged, the cooling fin has a sockethole for the sockets to pass through.
 12. The display according to claim8, wherein a top surface of the optical assembly has a plurality ofsuspension loops arranged, and the middle frame has a plurality of hooksadapting to the suspension loops arranged.
 13. The display according toclaim 8, wherein the optical assembly comprises a diffuser plate and anoptical film; the diffuser plate has a face-to-face contact with theMini LED lamp panel, and the optical film connects to the suspensionloops.
 14. The display according to claim 8, wherein a back of the backplate has a plurality of core modules and a back shell arranged, thecore modules locate inside the back shell; the back plate has aplurality of pillars arranged, the pillars separate the core modulesfrom the back plate.
 15. The display according to claim 14, wherein abottom of a back surface of the back plate has a reinforcement beamarranged, and the reinforcement beam comprises: two cross beams locatedon both sides of the core modules and a plurality of longitudinal beamsconnecting to the two cross beams.
 16. The display according to claim15, wherein the core modules connect electronically to the Mini LEDlamps through the sockets; the back plate has a wiring hole arranged,and a plurality of wires connecting to the core modules may pass throughthe wiring hole and the socket hole in turn and connect to the sockets.17. The display according to claim 8, wherein the middle frame has anLCD screen arranged on, and the LCD screen locates on a side of theoptical assembly away from the back plate.
 18. The display according toclaim 17, wherein the middle frame comprises: an upper middle frame, alower middle frame, a left middle frame, a right middle frame, a rearpressing plate and a front pressing plate.
 19. The display according toclaim 18, wherein a top edge, a left edge, and a right edge of the LCDscreen are connected to the upper middle frame, the left middle frame,and the right middle frame respectively.
 20. The display according toclaim 18, wherein a bottom edge of the LCD screen is fixed between therear pressing plate and the front pressing plate.